Jack Bogle

Bogle''s investment philosophy is the simplest on this entire list: buy the whole market, hold it forever, pay as little as possible to do so, and never let a market downturn scare you into selling. He believed individual stock picking and market timing were exercises in humility — the market will humble you.

He also believed that the financial industry had a conflict of interest with its clients: the more complex and expensive the product, the better for the firm and the worse for the investor.

Bill Gates

Gates invests through Cascade Investment LLC in established, cash-generative businesses — railroads, waste management, agricultural equipment, farmland. His biggest single Cascade holding for years was Canadian National Railway.

He has sold most of his Microsoft stock over time. His investment philosophy outside Microsoft mirrors Buffett's: durable businesses with pricing power, bought at reasonable prices.

Jack Bogle

Bogle''s core belief was that costs are the enemy of investors. Every dollar paid in management fees, transaction costs, and taxes is a dollar that does not compound.

Over 30 years, a 1% annual fee difference can reduce a portfolio by 25%. He called this the "tyranny of compounding costs." His secondary belief was behavioral: investors are their own worst enemy when they try to time the market or chase performance.

The solution to both problems is the same — buy a low-cost index fund, hold it indefinitely, and ignore the noise.

Bill Gates

His core framework: read obsessively, think long-term, and separate emotion from analysis. He takes annual Think Weeks — solo retreats to a lake cottage in the Pacific Northwest where he reads papers and books for two weeks with no interruptions.

He publishes a reading list twice a year at gatesnotes.com. He has said that the best investment he ever made was paying $100,000 to take Warren Buffett to dinner every year.

Jack Bogle

Bogle was conservative by nature and by philosophy. His famous asset allocation rule — hold your age in bonds — is a rule of thumb for declining risk as you approach retirement.

He was deeply skeptical of leverage, alternatives, and complex products. He was also skeptical of ETFs (despite Vanguard offering them), arguing that the ease of trading them encouraged investors to behave badly — buying high, selling low — in ways that traditional mutual fund investors could not.

Bill Gates

Gates's risk tolerance is intellectual and deliberate rather than impulsive. He takes genuinely large bets — TerraPower on nuclear fission, billions into climate technology, the Gates Foundation's campaigns to eradicate diseases that kill millions — but only after intense research.

His Think Weeks exist to force slow, rigorous thinking on big decisions. At Microsoft, he kept enough cash on hand to run the company for a full year with zero revenue because he never wanted short-term survival pressure to force a bad long-term decision.

That discipline carries into his personal finances.

Jack Bogle

Bogle was one of the most underpaid financial firm founders in history, by choice. Because Vanguard''s mutual structure does not enrich its leaders in the way that public companies do, Bogle ended up with approximately $80 million at his death — a fraction of what he would have been worth had Vanguard been structured like BlackRock or Fidelity.

He lived in a modest home in Pennsylvania. He drove ordinary cars.

He had a heart transplant in 1996 and continued working until shortly before his death in 2019 at age 89.

Bill Gates

He wakes up early, exercises on a treadmill while watching documentaries, and reportedly does the dishes every night. He has said dishes are meditative.

For a man worth $130 billion, the emphasis on routine is either deeply grounded or very good PR. He drove himself to work at Microsoft for years and lived in a normal house long after he could afford otherwise.

Jack Bogle

The index fund itself is the win. The Vanguard 500 Index Fund, launched in 1976, inspired the passive investing revolution that has saved ordinary investors an estimated $1 trillion in fees compared to actively managed alternatives.

The structural insight — that you cannot consistently beat the market, so don''t try — was empirically verified over decades. By 2019, more money was invested in passive index funds than in active funds in the United States for the first time ever.

That shift is largely Bogle''s legacy.

Bill Gates

Microsoft Windows. The decision to license MS-DOS to IBM for the PC while retaining the right to sell it to other manufacturers was arguably the most lucrative business decision in tech history.

Every PC manufacturer then licensed Windows. Gates captured the entire PC market without building the hardware.

By 1999, Microsoft's market cap hit $616 billion.

Jack Bogle

The Wellington merger with Thorndike, Doran, Paine & Lewis in 1966 was the admitted mistake of his career. He pushed for the merger to give Wellington growth stock exposure during the Go-Go era.

The combined firm underperformed badly in the bear market of 1973–1974. The board fired Bogle as CEO.

He has called the decision a serious error of judgment. The irony is that being fired is what created the circumstances for Vanguard.

The biggest professional failure of his life became the greatest gift to retail investors in history.

Bill Gates

Missing the internet. Microsoft was late and initially dismissive of the internet as a platform.

Gates eventually course-corrected and wrote the Internet Tidal Wave memo in 1995, redirecting the entire company toward internet strategy. But the delay allowed Netscape to establish footholds, and Microsoft's browser monopoly tactics led to the landmark antitrust case United States v.

Microsoft in 2000, which threatened to break up the company.

Jack Bogle

Bogle grew up in New Jersey during the Great Depression, in a family that lost most of its money in the crash of 1929. His father struggled, the family moved repeatedly, and Bogle attended Blair Academy on a scholarship.

He won another scholarship to Princeton, where he studied economics and wrote a senior thesis on the mutual fund industry — a thesis that predicted that most actively managed funds would fail to beat the market over time. He was 22.

He was right.

He joined Wellington Management Company in 1951 and rose to CEO. He then made a disastrous acquisition decision in the early 1970s that merged Wellington with a growth-focused firm — a merger that failed and cost Bogle his job.

He was fired in 1974. In response, he filed to create a new kind of investment company — one owned by its own funds and therefore by its fund shareholders, not by outside investors.

Vanguard was born in 1975. The first index fund for retail investors launched in 1976.

Bill Gates

Bill Gates was born in Seattle in 1955. He taught himself to program on a PDP-10 at age 13.

He enrolled at Harvard in 1973, dropped out in 1975, and moved to Albuquerque with Paul Allen to found Microsoft. Their break came when they licensed an operating system to IBM for the original PC — and crucially, retained the rights to sell it to anyone else.

That decision made Microsoft. Windows became the standard operating system for the world.

Gates became the world's richest person in 1995 and held that title for much of the next 15 years. He transitioned out of Microsoft's day-to-day around 2000 and fully moved into philanthropy via the Gates Foundation.

Jack Bogle

Vanguard is the company he built and the enduring legacy. Its mutual ownership structure — unusual in finance — means there are no outside shareholders taking profit.

The funds'' investors own Vanguard. This structure allows Vanguard to continuously lower its fees, because profit flows back to investors rather than to a corporate parent.

Today Vanguard manages over $8 trillion and is the largest issuer of mutual funds in the world.

The Vanguard 500 Index Fund (now VFIAX), launched in 1976, was the first retail index fund available to ordinary investors. It tracks the S&P 500.

It charges 0.04% annually. The average actively managed fund charges over 1%.

That difference, compounded over 30 years, is the difference between a comfortable retirement and a difficult one for millions of people.

Bill Gates

Microsoft (co-founder, former CEO and chairman). Cascade Investment LLC (his personal investment vehicle).

Bill & Melinda Gates Foundation (co-chair). Major holdings through Cascade include Canadian National Railway, Deere & Company, and significant farmland.

Early Microsoft equity remains a massive portion of his net worth.

Jack Bogle

Blair Academy (scholarship), 1947. Princeton University, BA in Economics, 1951.

His Princeton thesis — arguing that mutual funds could not consistently outperform the market and should focus on cost reduction — was the intellectual seed of the index fund. He has said the thesis was one of the most important things he ever wrote, which is unusual praise for a 22-year-old''s college paper.

Bill Gates

Harvard University — studied mathematics and computer science. Dropped out in 1975 after his sophomore year to found Microsoft.